Oven Thermostat and Temperature Problems

[geostorm]

I have a kenmore countertop oven, and turn on the oven and it only heats up to a certain point, a technician told me that it may be the ignitor that does not make sense to me, the oven lights ??

[n_flames]

When it takes far too long to finish baking, you probably have a weak bake igniter. Often, you need to replace the igniter, but you may want to troubleshoot the oven's electrical system further to more precisely locate the defect.
When the temperature is consistent but too high or too low, the oven thermostat or sensor is either mis-calibrated or defective. If your oven uses an electronic temperature-regulating device, you may have an electric sensor in the oven instead of a mechanical thermostat. If the oven temperature is off by 30 to 40 degrees in this type of unit, you must replace the sensor.
On many units with a mechanical thermostat, you can remove the thermostat knob and adjust the knob itself to more accurately represent the actual setting of the thermostat. If, when you remove the knob, there's a screw on the back of it with a small calibration plate, you can loosen the screw, adjust the plate, then tighten the screw again. If the knob isn't adjustable, and the oven temperature is off by more than 30 to 40 degrees, you need to replace the thermostat to solve the problem.
This info was obtained @ repairclinic.com